Bastion is the only character to play Yokai-Type monsters, and only in the Yu-Gi-Oh! GX manga. The Yokai's core strategy consists of Special Summoning Yokai from the Graveyard, which triggers their effects. Besides effects that allow the user to Special Summon their Yokai from the Graveyard, Yokai monsters and related cards also often have effects that send monsters to the Graveyard (like "Gozuki"), or that benefit from having Yokai monsters on the Graveyard (like "Judgment of the Underworld Ruler").

When the Yokai-Type monsters were released in the TCG/OCG, they were changed to Zombie-Type, making Yokai a Type exclusive to the manga.